scholarly journals Progress and Prospects of Forest Ecological Asset Research

2021 ◽  
Vol 14 (1) ◽  
pp. 395
Author(s):  
Tingling Li ◽  
Kangning Xiong ◽  
Shan Yang ◽  
Haiyan Liu ◽  
Yao Qin ◽  
...  
Keyword(s):  
Evaluation Index System ◽  
Research Progress ◽  
Ecological Environment ◽  
Future Research ◽  
Temporal Heterogeneity ◽  
Local Conditions ◽  
Technical Problems ◽  
Spatial And Temporal Heterogeneity ◽  
The Face ◽  
Ecological Assets

In recent years, in the face of the deterioration of the ecological environment, the research on forest ecological assets (FEA) has increasingly become a focal area of ecological research. To understand the current research progress and future prospects, this paper classifies and summarizes the main progress and achievements related to FEA in terms of theoretical studies, index systems, technical methods, and accounting models. In view of the existing research results, this paper proposes seven key scientific and technical problems and prospects to be solved, including the unification of the concept of ecological assets, the focus of future research on FEA, the construction of an evaluation index system according to local conditions, the integration of data assimilation methods that complement ground and remote sensing observations, the study of the spatial and temporal heterogeneity of forest ecological assets, the study of the net value of FEA, and the preservation and appreciation of FEA.

scholarly journals Factors affecting chemical heat washing efficiency of oily sludge and Demulsification Mechanism

2021 ◽  
Vol 329 ◽  
pp. 01053
Author(s):  
Yong Yang ◽  
Yijun Wang ◽  
Zebin Gao ◽  
Long Zhang ◽  
Chengtun Qu ◽  
...  
Keyword(s):  
Hazardous Waste ◽  
Research Progress ◽  
Ecological Environment ◽  
Future Research ◽  
Oily Sludge ◽  
Chemical Heat ◽  
Factors Affecting ◽  
Development Direction ◽  
Washing Efficiency ◽  
Main Factors

Oily sludge belongs to the hazardous waste specified in the national hazardous waste list. It will directly or indirectly threaten the ecological environment and human health. This paper introduces the advantages of chemical hot washing of oily sludge. This paper discusses the main factors affecting the treatment effect, Demulsification Mechanism and research progress in the treatment of oily sludge by chemical thermal washing, and puts forward some suggestions on the future research and development direction of oily sludge utilization and disposal.

scholarly journals Outlook and overview of microplastics pollution in ecological environment

2020 ◽  
Vol 143 ◽  
pp. 02027
Author(s):  
Zhao Bin ◽  
Cheng Yongqiang ◽  
Guo Cuilian ◽  
Liu Maoke ◽  
Yao Puyu ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Research Progress ◽  
Ecological Environment ◽  
Future Research ◽  
Research Directions ◽  
Toxicological Effects ◽  
New Type ◽  
Future Research Directions ◽  
Physical And Chemical ◽  
And Chemical Properties

Microplastics are attracting more and more attention as a new type of pollutant in the ecological environment. Microplastics are difficult to degrade because of their unique physical and chemical properties. Some microplastics adsorbed toxic chemicals (e.g. heavy metals or organic pollutants) will cause a series of toxicological effects in organisms. This paper summarized the research progress in microplastics from the aspects of the types, distribution, detection and the toxicological effects. In addition, future research directions were also proposed and discussed.

Research Progress on the Ocean Estuary and its Enlightenment to the Study of the Tributary in Three Gorges Reservoir

2013 ◽  
Vol 295-298 ◽  
pp. 2215-2222 ◽  
Author(s):  
Dao Bin Ji ◽  
Zheng Jian Yang ◽  
Yu Ling Huang ◽  
Jun Ma ◽  
Tao Xie ◽  
...  
Keyword(s):  
Saltwater Intrusion ◽  
Three Gorges Reservoir ◽  
Environmental Problems ◽  
Research Progress ◽  
Ecological Environment ◽  
Future Research ◽  
Three Gorges ◽  
Physical Context ◽  
The Future ◽  
Estuary Sediment

This paper comments and analyses the research progress of the estuary sediment and ecological environment, including saltwater intrusion phenomenon and laws, sediment and ecological environment. The physical context, sediment and ecological environmental problems of the tributary bay of TGR are analyzed comparatively with those in ocean estuary. Based on the existing research and achievements, this paper puts forward that the research ideas and methods of the ocean estuary should be drawn from, and outlooks the future research works on the dynamic and ecological environmental problems in tributary bays of TGR.

scholarly journals Research on the Evaluation of Ecological Assets Loss in Railway Construction Project Route Selection

2020 ◽  
Vol 145 ◽  
pp. 02038
Author(s):  
Liu Min ◽  
Shi Huansheng ◽  
Ji Chunlei ◽  
Chen Xiaqing
Keyword(s):  
Environmental Protection ◽  
Construction Projects ◽  
Evaluation Index System ◽  
Research Progress ◽  
Current Status ◽  
Future Research ◽  
Route Selection ◽  
Existing Problems ◽  
Railway Construction ◽  
Selection Of

At present, the route selection of railway construction projects from the perspective of environmental protection fails to objectively and comprehensively reflecting environmental protection requirements. Therefore, incorporating ecological asset assessment into the route selection of railway construction projects is conducive to promoting environmental protection to participate in railway route selection and improve railway route selection. This article summarizes the current status of railway route selection, identifies the existing problems in railway environmental route selection, and combines the research progress of ecological asset assessment, and proposes the assessment content and evaluation index system of ecological asset assessment in railway environmental route selection, and points out the future research prospects.

Polen: Flüchtlingsnotstand – aber wo sind die Flüchtlinge?

2005 ◽  
Vol 35 (140) ◽  
pp. 379-392
Author(s):  
Helmut Dietrich
Keyword(s):  
European Union ◽  
Western Europe ◽  
The European Union ◽  
Local Conditions ◽  
Asylum Policy ◽  
The Face ◽  
Emergency Measures

Poland accepted the alien and asylum policy of the European Union. But what does it mean, in the face of the fact that most of the refugees don´t want to sojourn a lot of time in Poland, but want to join their families or friends in Western Europe? How the transfer of policies does work, if the local conditions are quite different than in Germany or France? The answer seems to be the dramatization of the refugee situation in Poland, especially the adoption of emergency measures towards refugees of Chechnya.

Metabolism and Distribution of Novel Tumor Targeting Drugs In Vivo

2020 ◽  
Vol 21 (13) ◽  
pp. 996-1008
Author(s):  
Mengli Wang ◽  
Qiuzheng Du ◽  
Lihua Zuo ◽  
Peng Xue ◽  
Chao Lan ◽  
...  
Keyword(s):  
Monoclonal Antibodies ◽  
Small Molecule ◽  
High Efficiency ◽  
Tumor Therapy ◽  
Research Progress ◽  
Future Research ◽  
Pharmacokinetic Parameters ◽  
Molecular Characteristics ◽  
Targeted Drugs

Background: As a new tumor therapy, targeted therapy is becoming a hot topic due to its high efficiency and low toxicity. Drug effects of targeted tumor drugs are closely related to pharmacokinetics, so it is important to understand their distribution and metabolism in vivo. Methods: A systematic review of the literature on the metabolism and distribution of targeted drugs over the past 20 years was conducted, and the pharmacokinetic parameters of approved targeted drugs were summarized in combination with the FDA's drug instructions. Targeting drugs are divided into two categories: small molecule inhibitors and monoclonal antibodies. Novel targeting drugs and their mechanisms of action, which have been developed in recent years, are summarized. The distribution and metabolic processes of each drug in the human body are reviewed. Results: In this review, we found that the distribution and metabolism of small molecule kinase inhibitors (TKI) and monoclonal antibodies (mAb) showed different characteristics based on the differences of action mechanism and molecular characteristics. TKI absorbed rapidly (Tmax ≈ 1-4 h) and distributed in large amounts (Vd > 100 L). It was mainly oxidized and reduced by cytochrome P450 CYP3A4. However, due to the large molecular diameter, mAb was distributed to tissues slowly, and the volume of distribution was usually very low (Vd < 10 L). It was mainly hydrolyzed and metabolized into peptides and amino acids by protease hydrolysis. In addition, some of the latest drugs are still in clinical trials, and the in vivo process still needs further study. Conclusion: According to the summary of the research progress of the existing targeting drugs, it is found that they have high specificity, but there are still deficiencies in drug resistance and safety. Therefore, the development of safer and more effective targeted drugs is the future research direction. Meanwhile, this study also provides a theoretical basis for clinical accurate drug delivery.

Mix Networks: Existing Scenarios and Future Directions on Security and Privacy

2019 ◽  
Vol 14 ◽  
Author(s):  
Khaleel Ahmad ◽  
Afsar Kamal
Keyword(s):  
Security And Privacy ◽  
Research Progress ◽  
Future Research ◽  
Future Directions ◽  
Practical Solution ◽  
Research Gap ◽  
The Web ◽  
Privacy Enhancing Techniques

Background: Privacy enhancing techniques are developed in order to provide strong protection to cyberspace. These techniques aim to allow users to keep their identities hidden during the communication when they are sending email, making payments online, browsing the Web or posting to newsgroups. MixNet is the most practical solution for concealing identities of message and sender’s identities. Objective: It provides sender and receiver anonymity as well as message security. The main goal of MixNet is to overcome vulnerability and enhance the performance of communication. It can efficiently handle the messages of various length and produce desirable results with privacy. The main objective of this paper is to acquire information and concepts regarding MixNet. We also provide guidelines for future research and references. Methods : The designing of MixNet depends on what cryptosystem method is used. Symmetric and Asymmetric both are used. Other methods could be also used such as PIR, CSP and FDR model, RPC, Token-based approach or others. Result: In this paper we provide an overview of MixNet approaches and presented a survey on MixNet based techniques and different models. We also constructed the comparison tables as per our requirements for better understanding. For this purpose, we found a total of 120 articles related to the MixNet published between 1990 and 2018 from the most relevant scientific resources. However, only 86 papers were analyzed due to comprehensiveness and relevancy to this article. Conclusion: Focused on the security and privacy of communication and how it can be achieved. This survey also reveals research progress and research gap on MixNet.

Sign in / Sign up

Export Citation Format

Share Document